| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | on [Wh det] used to be | 6 |
|
| 2 | on [Wh det] used to [be] | 6 |
|
| 3 | on what used to [be] | 6 |
|
| 4 | on [Wh det] used to be | 6 |
|
| 5 | on [Wh det] used to [be] | 6 |
|
| 6 | on [Wh det] used to [be] | 6 |
|
